<script setup>
import { ref } from "vue";

const isCollapse = ref(true)
</script>
<template>
    <el-header class="top-box">
        <el-radio-group v-model="isCollapse" >
            <el-radio-button :label="false">expand</el-radio-button>
            <el-radio-button :label="true">collapse</el-radio-button>
        </el-radio-group>
    </el-header>
</template>
<style scoped>
.top-box{


    background-color: #a9a9a9;
}

 
</style>